Desk fan



FIG. 1 is a front view of the desk fan showing my new design;

FIG. 2 is a rear view thereof;

FIG. 3 is a side view thereof;

FIG. 4 is a side view thereof;

FIG. 5 is a top view thereof;

FIG. 6 is a bottom view thereof;

FIG. 7 is a perspective view thereof; and,

FIG. 8 is a rear perspective view thereof.

The ornamental design for a desk fan, as shown and described.